CN113843286A - Optical fiber sensing intelligent monitoring system - Google Patents
Optical fiber sensing intelligent monitoring system Download PDFInfo
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- CN113843286A CN113843286A CN202111008928.0A CN202111008928A CN113843286A CN 113843286 A CN113843286 A CN 113843286A CN 202111008928 A CN202111008928 A CN 202111008928A CN 113843286 A CN113843286 A CN 113843286A
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- optical fiber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
Abstract
The invention belongs to the technical field of optical fiber sensing, in particular to an optical fiber sensing intelligent monitoring system, aiming at the problem that the adjustment of a rolling mill is influenced because the difference of the deformation resistance transverse boxes of a steel strip is overlarge due to inaccurate detection of the steel temperature in the prior art, the invention provides the following scheme. The invention can monitor the temperature of the steel billet from the middle and two sides when the steel billet passes through the monitoring device when in use, improves the monitoring accuracy, can adjust two monitoring positions at two sides along with the width change of the steel billet and ensures that the monitoring positions at two sides are positioned in the width range of the steel billet.
Description
Technical Field
The invention relates to the technical field of optical fiber sensing, in particular to an optical fiber sensing intelligent monitoring system.
Background
In the production process of steel rolling, a steel billet is firstly sent into a heating furnace to be heated, then repeatedly rolled by a blooming mill, and then rolled by a finish rolling mill, and the temperature of the steel billet in each stage has direct influence on the deformation resistance, the rolling pressure, the metallographic structure, the grain size, the mechanical property and the surface state of the steel strip in each rolling mill frame. The existing temperature control method for the steel rolling process is that a thermodetector is used for detecting the tapping temperature of a heating furnace, the temperature before finish rolling, the outlet temperature of a finished product and the like, the steel temperature of each steel is recorded and displayed through a large screen, the tapping speed of the heating furnace is manually controlled by checking the steel temperature displayed by the large screen, and the temperature control is realized.
Therefore, the optical fiber sensing intelligent detection system has an excellent detection mode and more accuracy and is applied to the measurement of the surface temperature of the steel billet, once the temperature of a certain place on the surface of the steel billet is greatly changed, the temperature signal is converted into an optical signal, then a modulator is converted into a modulation signal, and then relevant parameters of a rolling mill can be automatically adjusted, so that the local downward pressure is increased or reduced, and the consistency of the thickness of each position of the steel strip is ensured. Therefore, an optical fiber transmission intelligent monitoring system suitable for steel strip rolling is needed.
Disclosure of Invention
The invention provides an optical fiber sensing intelligent monitoring system for overcoming the problem that the adjustment of a rolling mill is influenced by overlarge difference of a transverse box of deformation resistance of a steel strip due to inaccurate detection of steel temperature in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: an optical fiber sensing intelligent monitoring system comprises monitoring devices erected on front and rear roller ways, wherein the monitoring devices comprise bow-shaped supporting frames fixed between the upper surfaces of the roller frames on two sides of the roller ways, each bow-shaped supporting frame comprises two vertical rods and a horizontal cross beam, a T-shaped sliding chute is formed in the upper surface of each horizontal cross beam, a middle seat is fixed in the middle of each sliding chute of the T-shaped sliding chutes, sliding mounting seats which are symmetrical to each other are respectively arranged on two sides of each middle seat in each sliding chute of each T-shaped sliding chute, screw holes with opposite thread directions are respectively formed in one opposite sides of the two sliding mounting seats, a same two-way screw rod is screwed in the two screw holes, a servo motor is fixed at the end part, located on the two-way screw rod, of each upper surface of each middle seat and the two sliding mounting seats, a rotating table is arranged on each upper surface of each rotating table, and a downward inclined optical fiber sensor is fixed on each upper surface of each rotating table, thereby can be when the steel billet passes through monitoring devices when using, can follow the middle and the temperature of both sides three position is monitored respectively, improve monitoring accuracy to can adjust two monitoring positions on both sides along with the width change of steel billet, ensure that the monitoring position on both sides is located the width within range of steel billet.
As a preferable scheme in the invention, the optical fiber sensor is connected with the modulation converter through a signal line, the modulation converter is connected with the processor through a signal line, and the control switch of the servo motor is connected with the signal output end of the processor through a signal line, so that when the optical fiber sensor on two sides cannot detect the existence of the steel billet in use, the signal is processed by the modulation converter and then transmitted to the processor, and the processor controls the servo motor to rotate, so as to drive the optical fiber sensors on two sides to approach to the middle until the optical fiber sensors reach the edge of the steel billet, thereby achieving the effect of width measurement.
In a preferred embodiment of the present invention, a through hole penetrating through the intermediate seat is formed in a side surface of the intermediate seat, and a gap is left between an inner wall of the through hole and an outer wall of the bidirectional screw.
An optical fiber sensing intelligent monitoring system comprises the following steps:
the method comprises the following steps: firstly, three transverse optical fiber sensors on a monitoring device perform three temperature detections on the surface of an incoming billet in the transverse direction, the three detected temperature values are transmitted to a system processor for comparison, if the monitoring values of the sensors are not different greatly, the surface temperature of the incoming billet is uniform, and at the moment, the incoming billet is continuously rolled according to the originally set rolling schedule;
step two: if the monitoring results of the optical fiber sensors have large difference, then the optical fiber sensor with the large difference is locked, the numerical value of the optical fiber sensor is converted into a temperature numerical value through a modulator, if the temperature of the optical fiber sensor is higher than the ambient temperature, the optical fiber sensor is judged to be a bright spot, then the system determines the position of the bright spot, and the bright spot is analyzed and automatically processed in the next step;
the first case is: the bright spots are positioned at the edge of one side of the steel billet, and the pressing-down rate of the roller at the bright spot side of the subsequent pass rolling mill is correspondingly reduced; the second case is: the bright spots are in the middle position, and the reduction ratio of the middle position of the roller of the subsequent pass is correspondingly reduced; the third case is: the bright spots are positioned at two sides, and the reduction ratios of two ends of the roller are reduced;
step three: if the temperature data is lower than the ambient temperature, the black mark is formed, and then the system determines the position of the black mark and analyzes and automatically makes corresponding next processing;
the first case is: the shadow is positioned at the edge of one side of the steel billet, and the pressing-down rate of the roller at the end of the black print of the subsequent pass rolling mill is correspondingly increased; the second case is: the black mark is positioned at the middle position, and the reduction rate of the middle position of the roller of the subsequent pass is correspondingly increased; the third case is: the black mark is positioned at two sides, and the reduction rate of two ends of the roller is increased;
step four: three optical fiber sensors are arranged on a rear roller way of the finishing mill group after the fine adjustment of the pressing down to continuously monitor the temperature of the steel plate, and then the detection data of each sensor are compared, if the difference of each sensor is very small, the temperature difference in the width direction of the surface of the steel plate is almost not generated;
and if the difference is still within the required adjustment range, continuously executing the intelligent adjustment steps of the local position depression rate of the second step and the third step.
As a preferable aspect of the present invention, the adjustment of the pressing rate at the corresponding position, which is performed when the temperature data detected in the third step and the fourth step is higher or lower than the ambient temperature, is the intelligent adjustment step a.
To sum up, the beneficial effect in this scheme is:
1. according to the intelligent optical fiber sensing monitoring system, the three optical fiber sensors which are connected to the horizontal cross beam in a sliding mode are arranged, so that the temperature of a steel billet can be monitored from the middle position and the two sides when the steel billet passes through the monitoring device in use, the monitoring accuracy is improved, the two monitoring positions on the two sides can be adjusted along with the width change of the steel billet, and the monitoring positions on the two sides are ensured to be located in the width range of the steel billet;
2. according to the intelligent optical fiber sensing monitoring system, the bidirectional screw and the processor capable of controlling the forward and reverse rotation of the servo motor are arranged, when the intelligent optical fiber sensing monitoring system is used, when the optical fiber sensors on two sides cannot detect the existence of a steel billet, signals are processed by the modulation converter and then transmitted to the processor, the processor controls the servo motor to rotate, then the optical fiber sensors on two sides are driven to approach to the middle until the optical fiber sensors reach the edge of the steel billet, and the width measuring effect is achieved;
3. the optical fiber sensing intelligent monitoring system can accurately control the change of the corresponding roll pressing rate by increasing the local deformation resistance of the surface of the steel plate caused by temperature change through the arranged automatic analysis control system.
Drawings
Fig. 1 is a schematic flow chart of an optical fiber sensing intelligent monitoring system according to the present invention;
fig. 2 is a schematic diagram of a post-construction monitoring process of an optical fiber sensing intelligent monitoring system according to the present invention;
fig. 3 is a schematic perspective view of a monitoring device in an optical fiber sensing intelligent monitoring system according to the present invention;
FIG. 4 is a schematic view of a processing flow when a bright spot appears in the optical fiber sensing intelligent monitoring system according to the present invention;
fig. 5 is a schematic processing flow diagram when black printing occurs in the optical fiber sensing intelligent monitoring system according to the present invention.
In the figure: 1 roller frame, 2 bow-shaped supporting frames, 3T-shaped sliding chutes, 4 rotating tables, 5 sliding installation seats, 6 middle seats, 7 through holes, 8 optical fiber sensors, 9 bidirectional screws and A intelligent adjustment steps.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In this example
Referring to fig. 3, an optical fiber sensing intelligent monitoring system comprises a monitoring device erected on a front roller bed and a rear roller bed, the monitoring device comprises an arched support frame 2 fixed between the upper surfaces of the roller frames 1 on the two sides of the roller bed, the arched support frame 2 comprises two vertical rods and a horizontal beam, the upper surface of the horizontal beam is provided with a T-shaped chute 3, a middle seat 6 is fixed in the middle of the chute of the T-shaped chute 3, two symmetrical sliding installation seats 5 are respectively arranged on the two sides of the middle seat 6 in the chute of the T-shaped chute 3, screw holes with opposite thread directions are respectively arranged on the opposite sides of the two sliding installation seats 5, a same two-way screw rod 9 is screwed in the two screw holes, a servo motor is fixed on the end part of the two-way screw rod 9 on the upper surface of the arched support frame 2, the upper surfaces of the middle seat 6 and the two sliding installation seats 5 are both provided with rotating tables 4, and the upper surface of the rotating table 4 is fixed with the optical fiber sensor 8 which inclines downwards, so that when the billet passes through the monitoring device in use, the temperature of the billet can be monitored from the middle and the two sides respectively, the monitoring accuracy is improved, the two monitoring positions on the two sides can be adjusted along with the width change of the billet, and the monitoring positions on the two sides are ensured to be positioned in the width range of the billet.
Wherein, optical fiber sensor 8 is connected with the modulation converter through the signal line, and the modulation converter is connected with the treater through the signal line, servo motor's control switch passes through the signal line and links to each other with the signal output part of treater, thereby can be when using, when the optical fiber sensor 8 on both sides can not detect the existence of steel billet, can handle the signal through the modulation converter and retransmit to the treater, treater control servo motor rotates this moment, then drive the optical fiber sensor 8 on both sides and draw close to the centre, until the edge that reachs the steel billet can, the effect of surveying the width has been played.
Wherein, the side of the middle seat 6 is provided with a through hole 7 penetrating through the middle seat 6, and a gap is reserved between the inner wall of the through hole 7 and the outer wall of the bidirectional screw 9.
Referring to fig. 1-2 and 4-5, an optical fiber sensing intelligent monitoring system comprises the following steps:
the method comprises the following steps: firstly, three transverse optical fiber sensors 8 on a monitoring device perform three temperature detections on the surface of an incoming billet in the transverse direction, the three detected temperature values are transmitted to a system processor for comparison, if the monitoring values of the sensors are not different greatly, the surface temperature of the incoming billet is uniform, and at the moment, the incoming billet is continuously rolled according to the originally set rolling schedule;
step two: if the monitoring results of the optical fiber sensors 8 have large difference, locking the optical fiber sensor 8 with large difference, converting the numerical value into a temperature numerical value through a modulator, if the temperature is higher than the peripheral temperature, judging that the position is a bright spot, determining the position of the bright spot by a system, and analyzing and automatically making corresponding next processing;
the first case is: the bright spots are positioned at the edge of one side of the steel billet, and the pressing-down rate of the roller at the bright spot side of the subsequent pass rolling mill is correspondingly reduced; the second case is: the bright spots are in the middle position, and the reduction ratio of the middle position of the roller of the subsequent pass is correspondingly reduced; the third case is: the bright spots are positioned at two sides, and the reduction ratios of two ends of the roller are reduced;
step three: if the temperature data is lower than the ambient temperature, the black mark is formed, and then the system determines the position of the black mark and analyzes and automatically makes corresponding next processing;
the first case is: the shadow is positioned at the edge of one side of the steel billet, and the pressing-down rate of the roller at the end of the black print of the subsequent pass rolling mill is correspondingly increased; the second case is: the black mark is positioned at the middle position, and the reduction rate of the middle position of the roller of the subsequent pass is correspondingly increased; the third case is: the black mark is positioned at two sides, and the reduction rate of two ends of the roller is increased;
step four: three optical fiber sensors 8 are arranged on a rear roller way of the finishing mill group after the fine adjustment of the pressing down to continuously monitor the temperature of the steel plate, and then the detection data of each sensor are compared, if the difference of each sensor is very small, the temperature difference on the surface of the steel plate in the width direction is almost not generated;
and if the difference is still within the required adjustment range, continuously executing the intelligent adjustment steps of the local position depression rate of the second step and the third step.
And B, adjusting the pressing rate of the corresponding position when the temperature data detected in the third step and the fourth step is higher than or lower than the ambient temperature, wherein the step A is an intelligent adjusting step.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. An optical fiber sensing intelligent monitoring system comprises monitoring devices erected on a front roller bed and a rear roller bed, and is characterized in that the monitoring devices comprise bow-shaped supporting frames (2) fixed between the upper surfaces of the roller frames (1) on the two sides of the roller beds, each bow-shaped supporting frame (2) comprises two vertical rods and a horizontal cross beam, the upper surface of each horizontal cross beam is provided with a T-shaped sliding chute (3), the middle part of the inside of the sliding chute of each T-shaped sliding chute (3) is fixedly provided with an intermediate seat (6), the two sides of the inside of the sliding chute of each T-shaped sliding chute (3) which are positioned on the intermediate seat (6) are respectively provided with sliding installation seats (5) which are symmetrical with each other, screw holes with opposite thread directions are respectively arranged on the opposite sides of the two sliding installation seats (5), the two screw holes are connected with a same two-way screw rod (9) in a screwed manner, and servo motors are fixed on the end parts of the upper surfaces of the two-way screw rods (9) of the bow-shaped supporting frames (2), the upper surfaces of the middle seat (6) and the two sliding installation seats (5) are provided with rotating tables (4), and the upper surfaces of the rotating tables (4) are fixed with optical fiber sensors (8) which incline downwards.
2. The intelligent optical fiber sensing monitoring system according to claim 1, wherein the optical fiber sensor (8) is connected with a modulation converter through a signal line, the modulation converter is connected with a processor through a signal line, and a control switch of the servo motor is connected with a signal output end of the processor through a signal line.
3. The intelligent optical fiber sensing monitoring system according to claim 1, wherein a through hole (7) penetrating through the intermediate seat (6) is formed in a side surface of the intermediate seat (6), and a gap is reserved between an inner wall of the through hole (7) and an outer wall of the bidirectional screw (9).
4. The intelligent optical fiber sensing monitoring system according to claim 1, comprising the following steps:
the method comprises the following steps: firstly, three transverse optical fiber sensors (8) on a monitoring device perform three temperature detections on the surface of an incoming billet in the transverse direction, the three detected temperature values are transmitted to a system processor for comparison, if the monitoring values of the sensors are not different greatly, the surface temperature of the incoming billet is uniform, and at the moment, the rolling is continued according to the originally set rolling schedule;
step two: if the monitoring results of the optical fiber sensors (8) have large differences, then the optical fiber sensor (8) with the large difference is locked, the numerical value of the optical fiber sensor is converted into a temperature numerical value through a modulator, if the temperature of the optical fiber sensor is higher than the ambient temperature, the optical fiber sensor is judged to be a bright spot, then the system determines the position of the bright spot, and the bright spot is analyzed to automatically perform corresponding next processing;
the first case is: the bright spots are positioned at the edge of one side of the steel billet, and the pressing-down rate of the roller at the bright spot side of the subsequent pass rolling mill is correspondingly reduced; the second case is: the bright spots are in the middle position, and the reduction ratio of the middle position of the roller of the subsequent pass is correspondingly reduced; the third case is: the bright spots are positioned at two sides, and the reduction ratios of two ends of the roller are reduced;
step three: if the temperature data is lower than the ambient temperature, the black mark is formed, and then the system determines the position of the black mark and analyzes and automatically makes corresponding next processing;
the first case is: the shadow is positioned at the edge of one side of the steel billet, and the pressing-down rate of the roller at the end of the black print of the subsequent pass rolling mill is correspondingly increased; the second case is: the black mark is positioned at the middle position, and the reduction rate of the middle position of the roller of the subsequent pass is correspondingly increased; the third case is: the black mark is positioned at two sides, and the reduction rate of two ends of the roller is increased;
step four: three optical fiber sensors (8) are arranged on a roller way behind a finishing mill group after the fine adjustment of the pressing down to continuously monitor the temperature of the steel plate, and then the detection data of each sensor are compared, if the difference of each sensor is very small, the temperature difference is almost not generated on the surface of the steel plate in the width direction;
and if the difference is still within the required adjustment range, continuously executing the intelligent adjustment steps of the local position depression rate of the second step and the third step.
5. An intelligent optical fiber sensing monitoring system according to claim 4, wherein the adjustment of the depression rate at the corresponding position when the temperature data detected in the third step and the fourth step is higher or lower than the ambient temperature is the intelligent adjustment step (A).
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